Glass product forming mold

ABSTRACT

The present disclosure relates to a technical field of optics, and discloses a glass product forming mold. The glass product forming mold comprising: a lower mold comprising a first surface and a upper mold comprising a second surface; the lower mold includes a first forming portion for forming the glass product, the upper mold includes a second forming portion corresponding to the first forming portion; the lower mold includes at least one first effluence portion, the first effluence portion is formed by bending from the first surface and is located on the same side of the first surface as the first forming portion, and/or, the upper mold includes at least one second effluence portion, the second effluence portion is formed by bending from the second surface and is located on the same side of the second surface as the second forming portion. The mold is easy to demould and the product consistency is good.

TECHNICAL FIELD

The present disclosure relates to the field of optics, and in particularto a glass product forming mold.

BACKGROUND

Lens is an optical element made of transparent substance (such as glass,plastic, etc.), which can be widely used in security, vehicle, digitalcamera, laser, optical instruments, and other fields. With thecontinuous expansion of the market, the application of lens is more andmore extensive. Especially with the development of the Internet, variouselectronic devices are brought into daily lives, such as mobile phones,tablet computers, laptops, etc. Specification requirements of lensapplied in those electronic devices are also highly increased.

In the prior art, wafer-level lenses made of glass materials aregenerally produced by a glass processing mold through thermoforming.When the glass processing mold is enclosed, gaps with a preset shapewill be encircled inside the glass processing mold; the gaps can helpshape the heated glass substrate, and then the glass substrate is cooledto form glass products with a preset shape. Then, during demolding, theparts near the outer periphery and the parts near the center are proneto demolding errors, resulting in poor consistency of glass products.

SUMMARY

Aiming at above problems, the present disclosure seeks to provide aglass product forming mold with good demolding and good consistency.

In order to solve the above problems, embodiments of the presentdisclosure provide a camera optical lens. glass product forming mold,comprising: a lower mold comprising a first surface and an upper moldcomprising a second surface, the first surface is located on the side ofthe lower mold close to the upper mold, the second surface is located onthe side of the upper mold close to the lower mold; the lower moldincludes a first forming portion for forming the glass product, thefirst forming portion is formed by bending from the first surface, theupper mold includes a second forming portion corresponding to the firstforming portion, and the second forming portion is formed by bendingfrom the second surface; wherein the lower mold includes at least onefirst effluence portion, the first effluence portion is formed bybending from the first surface and is located on the same side of thefirst surface as the first forming portion, and/or, the upper moldincludes at least one second effluence portion, the second effluenceportion is formed by bending from the second surface and is located onthe same side of the second surface as the second forming portion.

As an improvement, both the first forming portion and the firsteffluence portion bulge from the first surface along a direction closeto the upper mold, and the bulge height of the first effluence portionis smaller than that of the first forming portion.

As an improvement, both the first forming portion and the firsteffluence portion dent from the first surface along a direction awayfrom the upper mold, and the dent depth of the first effluence portionis greater than that of the first forming portion.

As an improvement, both the second forming portion and the secondeffluence portion bulge from the second surface along a direction closeto the lower mold, and the bulge height of the second effluence portionis smaller than that of the second forming portion.

As an improvement, both the second forming portion and the secondeffluence portion dent from the second surface along a direction awayfrom the lower mold, and the dent depth of the second effluence portionis greater than that of the second forming portion.

As an improvement, viewed from a direction perpendicular to the firstsurface, the first effluence portion's connection to the first surfaceis circular, and the diameter on the first surface of the firsteffluence portion is smaller than that of the first forming portion.

As an improvement, viewed from a direction perpendicular to the secondsurface, the second effluence portion's connection to the second surfaceis circular, and the diameter on the second surface of the secondeffluence portion is smaller than that of the second forming portion.

As an improvement, the first effluence portion is provided at the centerof the first surface, and the second effluence portion is provided atthe center of the second surface.

As an improvement, there are multiple first effluence portions, andthere are multiple second effluence portions.

As an improvement, the number of the first effluence portions ismultiple, and one of the first effluence portions is arranged at thecenter of the first surface, and the rest of the first effluenceportions are arranged at equal intervals on the circumference with acenter point of the first surface as center of circle; the number of thesecond effluence portions is multiple, and one of the second effluenceportions is arranged at the center of the second surface, and the restof the second effluence portions are arranged at equal intervals on thecircumference with the center point of the second surface as center ofcircle.

As an improvement, viewed from a direction perpendicular to the firstsurface, the first effluence portion's connection to the first surfaceis circular, and the diameter on the first surface of the firsteffluence portion arranged on the circumference with the center point ofthe first surface as center of circle is smaller than that of the firsteffluence portion arranged at the center of the first surface; viewedfrom a direction perpendicular to the second surface, the secondeffluence portion's connection to the second surface is circular, andthe diameter on the second surface of the second effluence portionarranged on the circumference with the center point of the secondsurface as center of circle is smaller than that of the second effluenceportion arranged at the center of the second surface.

As an improvement, the lower mold includes a plurality of sub-formingregions, and the first effluence portions are provided in the pluralityof sub-forming regions.

As an improvement, the sub-forming regions are fan-shaped with an evennumber and are arranged around a center point of the first surface.

As an improvement, the sub-forming regions are rectangular and arearranged in a matrix on the first surface.

The beneficial effects of the present disclosure are as follows. Theglass product forming mold provided by the present disclosure can reducethe surface stress of the glass product by setting the effluenceportions to release the excess pressure during the molding process, andat the same time form a gap between the glass substrate and the surfaceof the mold, reduce the resistance during demoulding, and improve theconsistency of the glass products.

BRIEF DESCRIPTION OF DRAWINGS

To more clearly illustrate the technical solutions in the embodiments ofthe present disclosure clearer, accompanying drawings that need to beused in the description of the embodiments will briefly introduce infollowing. Obviously, the drawings described below are only someembodiments of the present disclosure. For A person of ordinary skill inthe art, other drawings can be obtained according to these withoutcreative labor, wherein:

FIG. 1 is a schematic diagram of a structure of a glass product formingmold according to a first embodiment of the present disclosure.

FIG. 2 is a schematic diagram of a structure of a lower mold of thefirst embodiment of the present disclosure.

FIG. 3 is a schematic diagram of a structure of an upper mold of thefirst embodiment of the present disclosure.

FIG. 4 is a schematic diagram of partial sectional view of the mold whenthe mold is closed in the first embodiment of the present disclosure.

FIG. 5 is an enlarged view of part A in FIG. 4 .

FIG. 6 is an enlarged view of part B in FIG. 4 .

FIG. 7 is a schematic diagram of a structure of a lower mold of a secondembodiment of the present disclosure.

FIG. 8 is a schematic diagram of a structure of a lower mold of a thirdembodiment of the present disclosure.

FIG. 9 is a schematic diagram of a structure of a lower mold of a fourthembodiment of the present disclosure.

DETAILED DESCRIPTION OF EMBODIMENTS

In order to make objects, technical solutions, and advantages of thepresent disclosure clearer, embodiments of the present disclosure aredescribed in detail with reference to accompanying drawings infollowing. A person of ordinary skill in the art can understand that, inthe embodiments of the present disclosure, many technical details areprovided to make readers better understand the present disclosure.However, even without these technical details and any changes andmodifications based on the following embodiments, technical solutionsrequired to be protected by the present disclosure can be implemented.

As shown in FIGS. 1-6 , the disclosure provides a glass product formingmold 1 comprising a lower mold 100 and an upper mold 200. The lower mold100 includes a first surface 112 and the upper mold 200 includes asecond surface 212. The first surface 112 is located on the side of thelower mold 100 close to the upper mold 200, the second surface 212 islocated on the side of the upper mold 200 close to the lower mold 100.The lower mold 100 includes a first forming portion 111 for forming aglass product, the first forming portion 111 is formed by bending fromthe first surface 112, the upper mold includes a second forming portion211 corresponding to the first forming portion 111, and the secondforming portion 211 is formed by bending from the second surface 212.The lower mold 100 includes at least one first effluence portion 113,the first effluence portion 113 is formed by bending from the firstsurface 112 and is located on the same side of the first surface 112 asthe first forming portion 111. The upper mold 200 includes at least onesecond effluence portion 213, the second effluence portion 213 is formedby bending from the second surface 212 and is located on the same sideof the second surface 212 as the second forming portion 211. During theforming process, the first forming part 111 and the second forming part211 are used to form a glass product whose surface features will becopied into the glass product. The first effluence portion 113 and thesecond effluence portion 213 are used for effluence, thereby releasingexcess pressure on the glass substrate 2 during molding, reducing thesurface stress of the glass product. The surface of the effluenceportions close to the glass substrate 2 is not in complete contact withthe glass substrate 2, and a gap is formed between the glass substrate 2and the effluence portions, which is conducive to demolding, reduces thedeformation of the glass product during demolding, and improves theconsistency of the glass product. In other optional embodiments, onlythe upper mold may be provided with effluence portion, or only the lowermold may be provided with effluence portion.

In this embodiment, the first forming portion 111 dent from the firstsurface 112 along a direction away from the upper mold 200, the firsteffluence portion 113 dent from the first surface 112 along a directionaway from the upper mold 200, and a dent depth H2 of the first effluenceportion 113 is greater than a dent depth H1 of the first forming portion111. In this way, a larger gap can be obtained between the firsteffluence portion and the glass substrate, which is more conducive todemolding. In other optional embodiments, the first forming portion andthe first effluence portion may also both bulge from the first surfacealong a direction close to the upper mold, and the bulge height of thefirst effluence portion is smaller than that of the first formingportion.

In this embodiment, the second forming portion 211 bulge from the secondsurface 212 along a direction close to the lower mold 100, the secondeffluence portion 213 bulge from the second surface 212 along adirection close to the lower mold 100, and a bulge height H4 of thesecond effluence portion 213 is smaller than a bulge height H3 of thesecond forming portion 211. In this way, a larger gap can be obtainedbetween the second effluence portion and the glass substrate, which ismore conducive to demolding. In other optional embodiments, both thesecond forming portion and the second effluence portion may also be dentfrom the second surface along a direction away from the lower mold, andthe dent depth of the second effluence portion is greater than that ofthe second forming portion.

In this embodiment, viewed from a direction perpendicular to the firstsurface 112, the connection between the first effluence portion 113 andthe first surface 112 is circular, and on the first surface 112, adiameter D2 of the first effluence portion 113 is smaller than adiameter D1 of the first molding portion 111. Setting it as a circle isconsistent with the shape of the mold, and the force in all directionsis uniform, which is better for improving the demoulding effect. Settinga smaller diameter allows more efficient use of the mold surface,increasing the yield of glass products. In other optional embodiments,the diameter D2 of the first effluence portion may also be greater thanor equal to the diameter D1 of the first forming portion.

In this embodiment, viewed from a direction perpendicular to the secondsurface 212, the connection between the second effluence portion 213 andthe second surface 212 is circular, and on the second surface 212, adiameter D4 of the second effluence portion 213 is smaller than adiameter D3 of the second molding portion 211. Setting it as a circle isconsistent with the shape of the mold, and the force in all directionsis uniform, which is better for improving the demoulding effect. Settinga smaller diameter allows more efficient use of the mold surface,increasing the yield of glass products. In other optional embodiments,the diameter D4 of the second effluence portion may also be greater thanor equal to the diameter D3 of the second forming portion.

In this embodiment, the first effluence portion 113 is provided at thecenter of the first surface 112, and the second effluence portion 213 isprovided at the center of the second surface 212. During molding, thepressure at the center of the mold is the largest, and arranging thefirst effluence portion and the second effluence portion at the centercan better relieve the pressure and improve the demolding performance.In other optional embodiments, a plurality of first effluence portionsmay be provided, and the plurality of first effluence portions arecentrally arranged at the center of the first surface to improve thepressure release capability at the center. In the same way, a pluralityof second effluence parts can also be provided, and the plurality ofsecond effluence parts are centrally arranged at the center of thesecond surface.

FIG. 7 shows a lower mold 300 in a second embodiment, and the structureof the corresponding upper mold is omitted in the drawings. the numberof the first effluence portions 313 is multiple, and one of the firsteffluence portions 313 is arranged at the center of the first surface312, and the rest of the first effluence portions 313 are arranged atequal intervals on the circumference with a center point of the firstsurface 312 as center of circle. Multiple first effluence portions worksimultaneously from multiple positions of the mold, and the effect isbetter. It can be seen that, correspondingly, the number of the secondeffluence portions may also be multiple, and one of the second effluenceportions is arranged at the center of the second surface, and the restof the second effluence portions are arranged at equal intervals on thecircumference with the center point of the second surface as center ofcircle.

In this embodiment, viewed from the direction perpendicular to the firstsurface 312, the connection between the first effluence portion 313 andthe first surface 312 is circular. The diameter of the first effluenceportion 313 provided on the circumference with the center point of thefirst surface 312 as the center of circle is smaller than the diameterof the first effluence portion 313 provided at the center of the firstsurface 312. The pressure during molding decreases from the center tothe periphery. This setting can effectively balance the pressure betweenthe center and the periphery and further improve the demoldingconsistency. Similarly, it can be seen that, correspondingly, viewedfrom the direction perpendicular to the second surface, the secondeffluence portion's connection to the second surface is circular, andthe diameter on the second surface of the second effluence portionarranged on the circumference with the center point of the secondsurface as center of circle is smaller than that of the second effluenceportion arranged at the center of the second surface.

FIG. 8 shows a lower mold 400 in a third embodiment, and the structureof the corresponding upper mold is omitted in the drawings. The lowermold 400 includes six sub-forming regions 414, and each of the sixsub-molding regions 414 is provided with a first effluence portion 413.There is also a first effluence portion 413 at the center. Thesub-forming regions are fan-shaped with an even number and are arrangedaround a center point of the first surface. This setting is conducive tothe data management of the mold cavity during production. In otheroptional embodiments, according to the size of the mold and the size ofthe forming portion, the number of sub-forming regions may be more orless, or an odd number, each sub-forming region may also be providedwith a plurality of first effluence portions.

FIG. 9 shows a lower mold 500 in a fourth embodiment, and the structureof the corresponding upper mold is omitted in the drawings. Thedifference from the third embodiment is the arrangement of thesub-forming regions. In this embodiment, the sub-forming regions arearranged in a matrix. This arrangement has advantages in the cuttingprocess after the forming. The formed glass substrate can be firstlydivided into rectangles of the same size, and then each rectangle can besubdivided and cut.

Compared with the related arts, the forming mold of the glass product ofthe present disclosure is provided with a effluence portion to releasethe excess pressure in the forming process, and reduce the surfacestress of the glass product. At the same time, gap is formed between theglass substrate and the surface of the mold, which reduces theresistance during demolding and improves the consistency of the glassproduct.

It can be understood by one having ordinary skill in the art that theabove-mentioned embodiments are specific embodiments of the presentdisclosure. In practical applications, various modifications can be madeto these embodiments in forms and details without departing from thespirit and scope of the present disclosure.

What is claimed is:
 1. A glass product forming mold, comprising: a lower mold comprising a first surface and an upper mold comprising a second surface, the first surface is located on the side of the lower mold close to the upper mold, the second surface is located on the side of the upper mold close to the lower mold; the lower mold includes a first forming portion for forming the glass product, the first forming portion is formed by bending from the first surface, the upper mold includes a second forming portion corresponding to the first forming portion, and the second forming portion is formed by bending from the second surface; wherein the lower mold includes at least one first effluence portion, the first effluence portion is formed by bending from the first surface and is located on the same side of the first surface as the first forming portion, and/or, the upper mold includes at least one second effluence portion, the second effluence portion is formed by bending from the second surface and is located on the same side of the second surface as the second forming portion.
 2. The glass product forming mold according to claim 1, wherein both the first forming portion and the first effluence portion bulge from the first surface along a direction close to the upper mold, and the bulge height of the first effluence portion is smaller than that of the first forming portion.
 3. The glass product forming mold according to claim 1, wherein both the first forming portion and the first effluence portion dent from the first surface along a direction away from the upper mold, and the dent depth of the first effluence portion is greater than that of the first forming portion.
 4. The glass product forming mold according to claim 1, wherein both the second forming portion and the second effluence portion bulge from the second surface along a direction close to the lower mold, and the bulge height of the second effluence portion is smaller than that of the second forming portion.
 5. The glass product forming mold according to claim 1, wherein both the second forming portion and the second effluence portion dent from the second surface along a direction away from the lower mold, and the dent depth of the second effluence portion is greater than that of the second forming portion.
 6. The glass product forming mold according to claim 3, wherein viewed from a direction perpendicular to the first surface, the first effluence portion's connection to the first surface is circular, and the diameter on the first surface of the first effluence portion is smaller than that of the first forming portion.
 7. The glass product forming mold according to claim 5, wherein viewed from a direction perpendicular to the second surface, the second effluence portion's connection to the second surface is circular, and the diameter on the second surface of the second effluence portion is smaller than that of the second forming portion.
 8. The glass product forming mold according to claim 1, wherein the first effluence portion is provided at the center of the first surface, and the second effluence portion is provided at the center of the second surface.
 9. The glass product forming mold according to claim 8, wherein there are multiple first effluence portions, and there are multiple second effluence portions.
 10. The glass product forming mold according to claim 1, the number of the first effluence portions is multiple, and one of the first effluence portions is arranged at the center of the first surface, and the rest of the first effluence portions are arranged at equal intervals on the circumference with a center point of the first surface as center of circle; the number of the second effluence portions is multiple, and one of the second effluence portions is arranged at the center of the second surface, and the rest of the second effluence portions are arranged at equal intervals on the circumference with the center point of the second surface as center of circle.
 11. The glass product forming mold according to claim 10, wherein viewed from a direction perpendicular to the first surface, the first effluence portion's connection to the first surface is circular, and the diameter on the first surface of the first effluence portion arranged on the circumference with the center point of the first surface as center of circle is smaller than that of the first effluence portion arranged at the center of the first surface; viewed from a direction perpendicular to the second surface, the second effluence portion's connection to the second surface is circular, and the diameter on the second surface of the second effluence portion arranged on the circumference with the center point of the second surface as center of circle is smaller than that of the second effluence portion arranged at the center of the second surface.
 12. The glass product forming mold according to claim 1, wherein the lower mold includes a plurality of sub-forming regions, and the first effluence portions are provided in the plurality of sub-forming regions.
 13. The glass product forming mold according to claim 12, wherein the sub-forming regions are fan-shaped with an even number and are arranged around a center point of the first surface.
 14. The glass product forming mold according to claim 12, wherein the sub-forming regions are rectangular and are arranged in a matrix on the first surface. 